Related problem here.
Usually I use rather good machine with 2Gb of memory, but now I have to use one with 512Mb. The problem is that PL/SQLDev is using too much memory for not that much open windows. In developer I opened at about 10-13 windows, like 5 packages, all other are sql scripts and command window. So developer uses 300Mb for that. To me it seems too much.
Is this a known memory problem or this is specific case?